Although Sarcocystis infections are very common in the muscle of mammals, and to a less extent of birds, in reptiles they have oniy rarely been seen. In a list given by Wenyon (1926) only two forms are recorded, namely from the muscles of Africaii geckoes and of the lizard Gongylus. The form here described was found in fairly large numbers in the striated muscle tissue of the Australian carpet snake Python spilotes. For the parasite the name Sarcocystis pythonis is suggested.

In 1917 Montgomery described a tick-borne gastro-enteritis of sheep and goats for which the name Nairobi sheep disease has passed into general use. In a comprehensive paper dealing with his work at Kabete he was able to show that the causal agent was a filtrable virus, transmitted by Rhipicephalus appendiculatus, the ordinary brown tick and common vector of East Coast fever in cattle. In spite of Montgomery's careful description of the lesions, of his record of failure to infect cattle, and of his successful filtration experiments, there has until recently been considerable confusion between this disease and heartwater, and opinions have been expressed that Montgomery was in all probability working with a strain of heartwater. During the course of certain investiga tions on heartwater the opportunity was taken to compare the two diseases and to confirm and extend Montgomery's observations.

Parmi le nombre des Diptères Pupipares de provenances diverses que j'ai eu l'occasion d'étudier récemment, certains, jugés nouveaux, seront décrits ici, d'autres, déjà connus, mais oftrant quelque intérêt aux divers points de vue systématique, éthologique ou géographique, feront l'objet d'une mention spéciale.

On 9. 1. 1928, Mrs R. A. Neuman of Ransomville, N.Y., sent me a tick for identification, stating that it was a kind of “bug” with which she was not familiar and that it was occasionally found on the walls of her home. She collected in all about six specimens, but sent me only one, which proved to be an Ornithodorus talaje (Guérin-Méneville), my identification having been since confirmed by Professor Nuttall and Mr Warburton.

[This paper deals with the biology of Pseudolynchia maura Bigot, the pupa and pupation period, sex ratio, offspring per female and longevity when bred under laboratory conditions by feeding on pigeons (the host in nature), chickens, mourning dove, man (hosts more or less unsuitable). Effects of the bite are described.—Ed.]

1. Some account of the occurrence of “Hepaticola” hepatica in various hosts is given, and it is recorded from the wood-mouse (Apodemus sylvaticus) in England.

2. Some additions and corrections are made to the morphological des scription of “H.” hepatica, which is shown to possess characters (presence of “bacillary bands,” presence of a spicule in the male) the supposed absence of which had led to the erection of the genus Hepaticola as distinct from Capillaria.

3. The status of the genera Hepaticola, Eucoleus, Thominx, Calodium and Liniscus is discussed, and the conclusion is reached that these should all be suppressed as synonyms of Capillaria, which is redefined.